Metrohm NIRS XDS MultiVial Analyzer - Manual (Page 7)

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Introduction
Thank you for selecting the XDS MultiVial Analyzer, manufactured by FOSS. This instrument is the
third generation in a series of instruments designed for precision NIR measurement, characterization
of organic materials, and qualification of known materials to allowable quality parameters.
The XDS MultiVial Analyzer is designed for stable operation in typical laboratory environments, while
providing the precision and accuracy users have come to expect of FOSS near-infrared (NIR)
instruments.
The MultiVial Analyzer comes with a choice of one vial tray. Others are optional.
The MultiVial Analyzer uses a proven monochromator design, employing a digitally-controlled
dispersive grating, sensitive detection devices, and state-of-the-art circuitry to enhance signal output
and minimize any extraneous noise that might influence performance. The XDS MultiVial Analyzer
uses various patented algorithms to provide superior accuracy and transferability between like
instruments. These software algorithms must be used to assure method transfer between
instruments. See section 7.1 for full details.
The versatile sampling mechanism of the MultiVial Analyzer
offers a movable sampling platform, suitable for handling
multiple vials or other samples. The software supports
acquisition of spectra in an unattended mode, freeing the
operator to prepare other samples, analyze data, or perform
unrelated tasks.
Vision supports four different default vial diameters, to
speed set-up. For custom vial diameters, set-up is
straightforward. The MultiVial Analyzer also offers variable
spot size, to focus energy on small vials.
Horizontal orientation of the sample transport mechanism facilitates loading, and prevents material
spills inside the sampling area of the instrument. The MultiVial Analyzer supports use of normal
sampling accessories for the XDS Rapid Solids Analyzer.
Sampling may be performed on two different physical levels, either directly on the sample window
(as with a normal XDS RCA) or on the vial tray, which is slightly raised from the glass. For this reason,